Optical position determination
First Claim
1. A coordinate sensor comprising:
- a data space formatted with at least one coding means for designating coordinates of at least one point in said data space;
a detector means for detecting said at least one coding means and for generating at least one output signal thereof;
a processing means for receiving and processing said at least one output signal from said detector means, thereby to determine the position of said detector means relative to said at least one point;
said data space comprises a writing surface;
said at least one coding means comprises an optical image;
said detector means comprises an array of light sensitive elements;
said processing means comprises a computer.
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Abstract
This invention relates to a coordinate sensor for detecting the position of a moveable detector relative to a data space coded with coordinate information by detecting and processing the coordinate information. It may be used for obtaining both two and three dimensional position related information, such as might be used for determining the position of a pen/pencil on paper for handwriting data input. It also may be used for detecting angular, rotational, and linear motion. The coordinate sensor provides an apparatus for precisely locating the position of a movable element within a space. More particularly, it provides an input/output apparatus for use with a computer that includes a movable element, whose exact position within a space can be determined without any physical connection between the movable element and the space. It comprises a data space formatted with a code for designating the coordinates of a point in the data space, a detector for detecting the code, a processor for processing data from the detector to determine the position of the point in the data space, and a data output method for human interface to the coordinate sensor.
1930 Citations
18 Claims
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1. A coordinate sensor comprising:
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a data space formatted with at least one coding means for designating coordinates of at least one point in said data space; a detector means for detecting said at least one coding means and for generating at least one output signal thereof; a processing means for receiving and processing said at least one output signal from said detector means, thereby to determine the position of said detector means relative to said at least one point; said data space comprises a writing surface; said at least one coding means comprises an optical image; said detector means comprises an array of light sensitive elements; said processing means comprises a computer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A coordinate sensor comprising:
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a data space formatted with at least one coding means for designating coordinates of at least one point in said data space; a detector means for detecting said at least one coding means and for generating at least one output signal thereof; a processing means for receiving and processing said at least one output signal from said detector means, thereby to determine the position of said detector means relative to said at least one point; said data space comprises a writing surface; an inscribing means for inscribing said writing surface. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification